User name horn
Log entry time 07:41:04 on July 8,2004
Entry number 471
keyword=Calibration: SOS Calorimeter at E=4.2The following figures show the result of a SOS calorimeter calibration at E=4.2. This calibration was repeated since the last calibration in Januray, because there seemed to be problems in the calibration due to a large fraction of pions in the sample used. A sample of electrons was selected with the following cuts:
hcer_npe > 4.0
ssdelta > -14
ssdelta < 20
In addition to these cuts a cut on the shower counter: ssshtrk>0.6 was implemented for the second calibration.
A small shift of the electron peak suggests that the calibration may still allow for improvement.
FIGURE 1
FIGURE 2
